Fatal trap??

[Gerard Samuel]

The box usually runs without any problems, but anyone have any idea what
caused the box to reboot with this error?  Hardware maybe?
FreeBSD 4.10-RELEASE-p3
Thanks
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Oct 21 17:27:34 hivemind /kernel: Fatal trap 12: page fault while in 
kernel mode
Oct 21 17:27:34 hivemind /kernel: fault virtual address = 0x12
Oct 21 17:27:34 hivemind /kernel: fault code            = supervisor 
read, page not present
Oct 21 17:27:34 hivemind /kernel: instruction pointer   = 0x8:0xc0212c7c
Oct 21 17:27:34 hivemind /kernel: stack pointer         = 0x10:0xd4815e7c
Oct 21 17:27:34 hivemind /kernel: frame pointer         = 0x10:0xd4815e84
Oct 21 17:27:34 hivemind /kernel: code segment          = base 0x0, 
limit 0xfffff, type 0x1b
Oct 21 17:27:34 hivemind /kernel: = DPL 0, pres 1, def32 1, gran 1
Oct 21 17:27:34 hivemind /kernel: processor eflags      = interrupt 
enabled, resume, IOPL = 0
Oct 21 17:27:34 hivemind /kernel: current process               = 3235 
(postgres)
Oct 21 17:27:34 hivemind /kernel: interrupt mask                = none
Oct 21 17:27:34 hivemind /kernel: trap number           = 12
Oct 21 17:27:34 hivemind /kernel: panic: page fault
Oct 21 17:27:34 hivemind /kernel:
Oct 21 17:27:34 hivemind /kernel: syncing disks... 38 1